#include<bits/stdc++.h>
#define int long long
using namespace std;
int n,a[100020],m,cnt;
signed main(){
	freopen("duel.in","r",stdin);
	freopen("duel.out","w",stdout);
	cin>>n;
	for(int i=1;i<=n;i++) cin>>a[i];
	sort(a+1,a+n+1);
	for(int i=1;i<=n;i++){
		if(a[i]!=a[i-1]) cnt=i-1;
		if(m<cnt) m++;
	}
	cout<<n-m<<endl;
	return 0;
}
